Caerphilly CF83: electric underfloor heating not working
A tested, documented approach to electric underfloor heating not working for property in and around Caerphilly. Caerphilly and the CF83 postcodes are handled by the same electrician throughout.
Do this before we arrive
- Check the board for a tripped device on the heating circuit before assuming the mat has failed. Worth knowing before booking.
- In our experience locally, note when it last worked and whether any flooring, plumbing or joinery work happened around then.
- Confirm the thermostat is actually calling for heat — set point well above room temperature, and check any holiday or timer mode. No extra charge attaches to it.
One thing worth repeating: underfloor heating circuits require RCD protection, and a mat that fails insulation resistance testing must not be energised again until it has been repaired or isolated permanently.
This page covers electric underfloor heating not working for property in Caerphilly and the CF83 postcodes around it.
The order of work matters: isolate, test, explain, then price. Skipping the middle two is how people end up paying twice. Which is why the price follows the test rather than the other way round.
Caerphilly County Borough Council is the authority for Caerphilly, so where the work is notifiable the registration goes through them. The regulations are specific about it, so there is little room for opinion.
Age alone does not condemn an installation. Plenty of older Caerphilly wiring tests perfectly well; some newer work does not. Which is why the schedule of results is worth reading, not filing.
People often expect the worst outcome. In practice, most Caerphilly visits of this kind end with a defined, limited piece of work. For new-build estates around Bedwas and Trecenydd that detail matters more than it does elsewhere.
A written record matters as much as the work. Anything we find at a CF83 address is documented in a form you can hand to someone else. We would explain the same thing on site, just with the board open.
Certification and paperwork are part of the job, not an optional extra at the end. Older property, altered property and previously let property all get the same testing discipline.
Everything below applies to electric underfloor heating not working in Caerphilly and its immediate neighbours.
What tends to be behind it
- A tripped RCD or RCBO on the heating circuit. It rarely announces itself until load is applied.
- Physical damage to the mat, typically from a fixing. We would rather find this on a planned visit than an urgent one.
- A failed floor sensor reading open or short circuit, which is measurable rather than a matter of opinion.
- Properties near Cardiff throw this up regularly: a thermostat at end of life, or one whose.
What gets done
- We we measure the mat's resistance and insulation resistance against so the record matches what is actually installed.
- Where access allows we that sequence tells us in minutes whether you are.
- We we measure the mat's resistance and insulation resistance against as part of the same visit.
For Caerphilly work: mat, sensor and thermostat testing quoted as a single diagnostic visit; parts and repair priced after readings.
Why this comes up in Caerphilly
Caerphilly housing is largely new-build estates in Bedwas, and that shapes how this fault presents.
Travel to Caerphilly is already built into how the week is planned, so it does not appear on your invoice as a surcharge.
Neighbouring Cardiff, Newport, Ystrad Mynach are covered from the same base as Caerphilly.
Questions we get asked
Can you advise without doing the work?
Yes. Plenty of Caerphilly visits end with advice and no invoice for work that is not needed yet.
Who do I speak to on the day?
The electrician doing the work. There is no call centre between you and the person at the Caerphilly property.
How far in advance should I book?
For non-urgent work, a week or so gives the most choice of slots across CF83.
Do you deal with the paperwork for the council?
Where notification is required, it is submitted to Caerphilly County Borough Council as part of the job.
Do you charge more for Caerphilly callouts?
No. Caerphilly and the surrounding Cardiff and Newport area are inside our standard coverage, so the same callout applies as anywhere else we work.
Request a callback
We would rather answer a question than sell you a visit you do not need. Ask first. Mention Caerphilly and the electric underfloor heating not working you need when you get in touch.